Agraffe for piano sounding-boards



(No Model.) O. W. BREWER.

AGRAFFB FOR PIANO SOUNDING BOARDS. No. 298,664.

Patented May 13, 1884.

Ina/@577 6m QQMQ W UNITED STATES PATENT OFFICE.

CHARLES WILLIAM BREWER, OF RACINE, WISCONSIN.

' AGRAFFE FOR PIANO SOUNDlNG-BOARDS.

SPECIFICATION forming part of Letters Patent No. 298,664, dated May 13,1884.

Application filed April 6, 1883. (No model.)

To (ZZZ whom it may concern:

Be it known that I, CHARLES W. BREWER, a citizen of the United States,residing at Racine, in the county of Racine and State of Wisconsin, haveinvented certain new and useful Improvements in Agrafies forSounding-Boards, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to certain improvements in piano-fortes; and ithas for its objects to provide an improved agraffe for the same whichcan be readily applied to any style of piano-forte, so as to securelyfasten the strings in such manner as to relieve the sounding-board ofundue strain. These objects, I attain by the means illustrated in theaccompanying drawings, in which- Figure 1 represents a perspectiveshowing my invention, and Fig. 2 represents a detail elevation of thebinding-screw.

The letter A indicates the sounding-board of a piano, and B the frame atthe sides of the same, to which are attached the pins or studs 0 and 1),around which the strings or wires are passed and held in position.

The letter E indicates the tuning-pins, to which the ends of the wiresare secured in the usual manner.

the wires, as shown.

The letter F indicates the bridge over which the wires pass, and towhich they are clamped by the agraffe. The bridge is provided with fretsG, or metallic projections over which the wires extend, the said wiresbeing held and clamped to the same by means of a shouldered screw, H,the shoulder of which bears upon The binding-face or under side of theshoulder of the screw II is curved or rounded, so as to clamp the wireWithout injuring it,

Having thus described my invention, what I claim, and desire to secureby Letters Patent,

An agraffe for piano-fortes, consisting of two parallel frets applied tothe bridge of the sounding board, and the shouldered screw rounded onthe binding-face or the under side of the shoulder, and adapted to bearupon the wires between the frets, substantially as and for the purposesspecified.

In testimony whereof I a'ffix my signature in presence of two witnesses.

CHARLES WILLIAM BREWER.

Witnesses:

CHAS. J. ROBERTSON, PEROIVAL S. FULLER.

